/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.mssql;

import com.alibaba.nacos.common.utils.CollectionUtils;
import com.alibaba.nacos.plugin.datasource.constants.DatabaseTypeConstant;
import com.alibaba.nacos.plugin.datasource.constants.FieldConstant;
import com.alibaba.nacos.plugin.datasource.impl.mysql.HistoryConfigInfoMapperByMySql;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

/**
 * The SQL Server implementation of HistoryConfigInfoMapper.
 *
 * @author QY Li
 **/
public class HistoryConfigInfoMapperBySqlServer extends HistoryConfigInfoMapperByMySql {
    
    @Override
    public MapperResult removeConfigHistory(MapperContext context) {
        String sql = "DELETE FROM his_config_info WHERE gmt_modified < ? "
                + " ORDER BY id OFFSET 0 ROWS FETCH NEXT ? ROWS ONLY ";
        return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.START_TIME),
                context.getWhereParameter(FieldConstant.LIMIT_SIZE)));
    }
    
    @Override
    public MapperResult pageFindConfigHistoryFetchRows(MapperContext context) {
        String sql =
                "SELECT nid, data_id, group_id, tenant_id, app_name, src_ip, src_user, op_type, gmt_create, gmt_modified "
                        + " FROM his_config_info "
                        + " WHERE data_id = ? AND group_id = ? AND tenant_id = ? ORDER BY nid DESC "
                        + context.getStartRow() + " ROWS FETCH NEXT " + context.getPageSize() + " ROWS ONLY ";
        return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.DATA_ID),
                context.getWhereParameter(FieldConstant.GROUP_ID), context.getWhereParameter(FieldConstant.TENANT_ID)));
    }

    @Override
    public MapperResult findDeletedConfig(MapperContext context) {
        return new MapperResult(
                "SELECT data_id, group_id, tenant_id, gmt_modified, nid FROM his_config_info "
                        + " WHERE op_type = 'D' AND gmt_modified >= ? AND nid > ? "
                        + " ORDER BY nid OFFSET 0 ROWS FETCH NEXT ? ROWS ONLY ",
                CollectionUtils.list(context.getWhereParameter(FieldConstant.START_TIME),
                        context.getWhereParameter(FieldConstant.LAST_MAX_ID),
                        context.getWhereParameter(FieldConstant.PAGE_SIZE)));
    }
    
    @Override
    public String getDataSource() {
        return DatabaseTypeConstant.SQLSERVER;
    }
}
